Comments

In beggining, there is only one possible move for each player, so we can think that opening setup is this:
DFFQMGGSBBS.S...s.sbbsggmqttd
By the way, there is problem with notation: snail and spider uses same letters! Also, i think, for better storage, better names for pieces must be more or less standart: snail - wazir, bee - ferz, spider - prince, mouse - rook, frog - bishop, dragonfly - queen, queen - king (double step leaps are compared with diagonal moves on 2d board). However, themed names are also good, but spider needs another letter in notation.

I also invented a one dimensional chess game, called Rutherford's 1 dimensional Shogi, that I was rather proud of. I have since revamped my rules and have submitted them (look for Ito Shogi in the near future). I was having difficulty coming up with a playable game with orthodox chess rules, and found that I could use Shogi to create a playable 1-d game. I must hand it to you, however, that String Chess is one of the best 1-d chess variants I've seen. You use some clever methods to make a good game. Bravo.